diff --git a/Foxnouns.Backend/Program.cs b/Foxnouns.Backend/Program.cs
index f0c3e19..17a56d9 100644
--- a/Foxnouns.Backend/Program.cs
+++ b/Foxnouns.Backend/Program.cs
@@ -18,7 +18,7 @@ builder.AddSerilog();
 builder
     .WebHost.UseSentry(opts =>
     {
-        opts.Dsn = config.Logging.SentryUrl;
+        opts.Dsn = config.Logging.SentryUrl ?? "";
         opts.TracesSampleRate = config.Logging.SentryTracesSampleRate;
         opts.MaxRequestBodySize = RequestSize.Small;
     })
diff --git a/Foxnouns.Backend/Utils/ValidationUtils.cs b/Foxnouns.Backend/Utils/ValidationUtils.cs
index 0969a47..bb225ff 100644
--- a/Foxnouns.Backend/Utils/ValidationUtils.cs
+++ b/Foxnouns.Backend/Utils/ValidationUtils.cs
@@ -162,6 +162,7 @@ public static partial class ValidationUtils
     }
 
     public const int MaxBioLength = 1024;
+    public const int MaxAvatarLength = 1_500_000;
 
     public static ValidationError? ValidateBio(string? bio)
     {
@@ -183,7 +184,10 @@ public static partial class ValidationUtils
         return avatar?.Length switch
         {
             0 => ValidationError.GenericValidationError("Avatar cannot be empty", null),
-            > 1_500_000 => ValidationError.GenericValidationError("Avatar is too large", null),
+            > MaxAvatarLength => ValidationError.GenericValidationError(
+                "Avatar is too large",
+                null
+            ),
             _ => null,
         };
     }